mirror of
https://github.com/Ryujinx/Ryujinx.git
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d4187aaa9d
* (Re)Implement format reinterpretation, other changes * Implement writeback to guest memory, some refactoring * More refactoring, implement reinterpretation the old way again * Clean up * Some fixes on M2MF (old Dma engine), added partial support for P2MF, fix conditional ssy, add Z24S8 zeta format, other fixes * nit: Formatting * Address PR feedback
82 lines
No EOL
2.4 KiB
C#
82 lines
No EOL
2.4 KiB
C#
using ChocolArm64.Memory;
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using System;
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namespace Ryujinx.Graphics.Memory
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{
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class NvGpuVmmCache
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{
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private ValueRangeSet<int> CachedRanges;
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public NvGpuVmmCache()
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{
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CachedRanges = new ValueRangeSet<int>();
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}
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public bool IsRegionModified(AMemory Memory, NvGpuBufferType BufferType, long PA, long Size)
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{
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(bool[] Modified, long ModifiedCount) = Memory.IsRegionModified(PA, Size);
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//Remove all modified ranges.
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int Index = 0;
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long Position = PA & ~NvGpuVmm.PageMask;
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while (ModifiedCount > 0)
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{
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if (Modified[Index++])
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{
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CachedRanges.Remove(new ValueRange<int>(Position, Position + NvGpuVmm.PageSize));
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ModifiedCount--;
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}
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Position += NvGpuVmm.PageSize;
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}
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//Mask has the bit set for the current resource type.
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//If the region is not yet present on the list, then a new ValueRange
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//is directly added with the current resource type as the only bit set.
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//Otherwise, it just sets the bit for this new resource type on the current mask.
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int Mask = 1 << (int)BufferType;
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ValueRange<int> NewCached = new ValueRange<int>(PA, PA + Size);
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ValueRange<int>[] Ranges = CachedRanges.GetAllIntersections(NewCached);
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long LastEnd = NewCached.Start;
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long Coverage = 0;
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for (Index = 0; Index < Ranges.Length; Index++)
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{
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ValueRange<int> Current = Ranges[Index];
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long RgStart = Math.Max(Current.Start, NewCached.Start);
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long RgEnd = Math.Min(Current.End, NewCached.End);
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if ((Current.Value & Mask) == 0)
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{
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CachedRanges.Add(new ValueRange<int>(RgStart, RgEnd, Current.Value | Mask));
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}
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else
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{
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Coverage += RgEnd - RgStart;
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}
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if (RgStart > LastEnd)
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{
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CachedRanges.Add(new ValueRange<int>(LastEnd, RgStart, Mask));
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}
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LastEnd = RgEnd;
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}
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if (LastEnd < NewCached.End)
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{
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CachedRanges.Add(new ValueRange<int>(LastEnd, NewCached.End, Mask));
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}
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return Coverage != Size;
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}
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}
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} |